ξ Scorpii (xi Scorpii)

Below the horizon. Rise: 20:10 | Tran: 1:14 | Set: 6:13

Alt: -21.72° Az: 80.93° Direction: East

ξ Scorpii is a multiple sub-giant star of spectral class F5 in the constellation of Scorpius.

ξ Scorpii visual magnitude is 4.77. Because of its moderate brightness, ξ Scorpii is easily visible to the naked eye from locations with dark skies, while it might be barely visible, or not visible at all, from light-polluted skies.

DSS2 image of ξ Scorpii. The red arrow shows the motion of ξ Scorpii during the next 10000 years (-10.00 arcmin in Right Ascension and -4.83 arcmin in declination);

Celestial Coordinates

Apparent

Right Ascension 16h 05m 46s

Declination -11° 26’ 27”

Hour Angle 16h 37m 33s

Sidereal Time 08h 43m 19s

J2000

Right Ascension 16h 04m 22s

Declination -11° 22’ 23”

Galactic Coordinates

Galactic Longitude 0.02°

Galactic Latitude 29.42°

Finder Chart

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Finder chart for ξ Scorpii (xi Scorpii).

Magnitude, Color, Spectral Class

Color ⬤

Magnitude 4.77

Class Sub-giant

Absolute magnitude 2.84

Spectral Type F5IV

Color Index (B-V) 0.47

Temperature 6528K

The red dot in the diagram below shows where ξ Scorpii is situated in the Hertzsprung–Russell diagram.

H-R diagram showing the position of ξ Scorpii. Attribution: Richard Powell / CC BY-SA

Star System Properties

ξ Scorpii is a visual double star which can be observed with the help of large telescopes. The table below shows key information about the ξ Scorpii double sysyem:

Main star magnitude 4.77

Secondary star magnitude 4.97

Magnitude difference 0.2

Separation 1.2 arcsec

Distance, Radial Speed, Proper Motion

ξ Scorpii is distant 79.32 light years from the Sun and it is moving towards the Sun at the speed of 29 kilometers per second.

Distance (parsec) 24.33

Distance (light year) 79.32

Radial Speed -29 km/s

Proper Motion RA -0.06 arcsec/y

Proper Motion Dec -0.029"/y

Alternative Designations

Bayer designation ξ Scorpii
(xi Scorpii)

Henry Draper Catalogue HD144070

SAO Catalogue SAO159665

Durchmusterung Catalogue BD-10 4237

Gliese Catalogue Wo 9540 A

Aitken Double Star Catalogue ADS9909

Visibility from Your Location

Today's ξ Scorpii (xi Scorpii) rise, transit and set times from Greenwich, UK are the following (all times relative to the local timezone Europe/London):

Azimuth: 101.4° RISE 20:10

Max altitude: 27.1° TRANSIT 1:14

Azimuth: 258.6° SET 6:13

Set Location

Other stars in Scorpius